Why Is It Necessary to Have a Standard for the Interpretation

question 10

Multiple Choice

Why is it necessary to have a standard for the interpretation of stable isotope ratios?

• A) A standard is necessary to calculate how rapidly the stable isotopes undergo radioactive decay.
• B) A standard is necessary to determine the stable isotope ratio in the absence of biological activity.
• C) A standard is necessary because samples are only presented in comparison with other samples of the same age.
• D) A standard is necessary to determine the age of the sample.

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Definitions:

Morrill Land-Grant Act

Legislation passed in 1862 that provided states with land to finance the establishment of colleges specializing in agriculture and the mechanical arts.

Public Lands

Land owned by the government, open for use and development by the public or preserved for environmental protection or cultural significance.

Mexican-American Outlaw

A figure from history or folklore, often romanticized, involved in criminal activities in the contexts of the U.S.-Mexican borderlands.

Gregorio Cortez

A Mexican-American folk hero and outlaw known for his resistance against law enforcement injustices in early 20th-century Texas.